Heat pumping with optically driven excitons

Details Heat pumping with optically driven excitons Heat pumping with optically driven excitons

2010-01-25

arxiv.org/abs/1001.4446v2

Phys. Rev. B 82, 073301 (2010)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevB.82.073301

We present a theoretical study showing that an optically driven excitonic two-level system in a solid state environment acts as a heat pump by means of repeated phonon emission or absorption events. We derive a master equation for the combined phonon bath and two-level system dynamics and analyze the direction and rate of energy transfer as a function of the externally accessible driving parameters. We discover that if the driving laser is detuned from the exciton transition, cooling the phonon environment becomes possible.

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